Experimental Information On Mass- And Tke-Dependence Of The Prompt Fission Gamma-Ray Multiplicity

Prompt gamma rays from the spontaneous fission of Cf-252 were measured with cerium-doped LaBr3 detectors. The average prompt fission gamma-ray multiplicity, M-gamma, was determined as a function of fragment mass number (A) and total kinetic energy (TKE). High-statistics data, obtained from three detectors of different size at different angles relative to the fission chamber, confirms unequivocally a saw-tooth like shape of the gamma multiplicity as a function of fragment mass, in contrast to previously published data. In addition, the TKE-dependence of M-gamma was determined experimentally and compared with recent data. (C) 2021 The Author(s). Published by Elsevier B.V.